Tartu Ülikool2026-03-062026-03-061977ARH PT-1753 1976-1980https://hdl.handle.net/10062/119426etAttribution-NonCommercial-NoDerivs 3.0 Estoniahttps://creativecommons.org/licenses/by-nc-nd/3.0/ee/pisitrükisedküsimustikudhuvidharrastusedOther